My negatives are stored in three ring binders as well(all have a file number and another number-usually in order of being taken,ie:1-35 for file one,roll 35)all have dates on them as well.corresponding with this I have a seperate index with the same info on a print/contact sheet/index print that the negs have so all I do is look at the index for what I want then find it in the neg binder it is in.
I do have one question though-the bottom negs in my binders seem to bend a liitle due to gravity(at the moment I have them all hanging upside down(lengthwise)does anyone have a better solution?

"An object never performs the same function as its name or its image"-Rene Magritte

"An image of a dog does not bite"-William James applied to photography